Clayton, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Clayton, California is 10,962 as of the 2023 American Community Survey, making it the 475th-largest city in California. The median household income is $172,226, the median home value is $1,017,300, and the median age is 44.3.
The population has declined 0.2% since 2010 (10,958 → 10,933).
10,962
Population
2855
People / sq mi
$172,226
Median Income
$1,017,300
Median Home Value
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Clayton covers 3.8 sq mi of land at 2855 people per square mile.
About Clayton, CA
The poverty rate is what most separates Clayton from the typical city: 1.4% of residents live below the federal poverty line, against 12.4% nationally. Clayton is a city in California with a population of 10,962.
Income is a real outlier — the median household pulls in $172,226, putting Clayton near the top of US cities. Hardship is rare relative to US cities: a poverty rate of just 1.4%, below the national 12.4%. Housing is expensive: the median home is worth $1,017,300, with typical rent around $3,501.
Educational attainment is on the higher side for US cities — 58.8% of adults hold a four-year degree, above the national 35.0%. Remote work is on the higher side at 20.3%, above the national 14.0%, and the average commute runs about 39 minutes each way.
Clayton city Population History (2010-2024)
The city of Clayton city had a population of 10,958 in 2010 and 10,933 in 2024, a -0.2% growth over 14 years. The peak was 12,265 in 2019. Average annual growth rate: 0.03%.
10,933
Population (2024)
10,958
Population (2010)
12,265
Peak (2019)
0.03%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,958 |
| 2011 | 11,148 |
| 2012 | 11,271 |
| 2013 | 11,481 |
| 2014 | 11,667 |
| 2015 | 11,840 |
| 2016 | 12,008 |
| 2017 | 12,127 |
| 2018 | 12,196 |
| 2019 | 12,265 |
| 2020 | 11,061 |
| 2021 | 10,983 |
| 2022 | 10,881 |
| 2023 | 10,853 |
| 2024 | 10,933 |
Race & Ethnicity
| White | 70.1% |
| Black or African American | 0.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.5% |
| Two or More Races | 0.0% |
Economy & Income
$172,226
Median Household Income
$73,228
Per Capita Income
1.4%
Poverty Rate
4.4%
Unemployment Rate
Housing
$1,017,300
Median Home Value
$3,501
Median Rent
90.3%
Owner-Occupied
Education
98.5%
High School+
58.8%
Bachelor's+
Commute
2.3%
Drive Alone
66.3%
Public Transit
20.3%
Work From Home
39.0 min
Avg Commute
Community Profile
22.3%
Foreign Born
85.8%
Non-English at Home
3.8%
Veterans
8.7%
With Disability
98.4%
Health Insurance
98.5%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 23.2% |
| Finance, Insurance & Real Estate | 20.1% |
| Information | 8.8% |
| Education, Health Care & Social Services | 8.2% |
| Arts, Entertainment & Food Services | 8.2% |
| Retail Trade | 5.6% |
| Construction | 5.3% |
| Public Administration | 4.2% |
| Manufacturing | 4.0% |
| Transportation & Warehousing | 2.2% |
Largest cities in California
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Metro areas in California
City rankings
Frequently Asked Questions
Clayton, California has a population of 10,962 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 475th-largest city in California.
The median household income in Clayton, California is $172,226, with 1.4% of residents living below the federal poverty level.
The median home value in Clayton, California is $1,017,300, with median monthly rent at $3,501 and a homeownership rate of 90.3%.
The median age in Clayton, California is 44.3 years. The population is 50.2% male and 49.8% female.
The population has declined 0.2% since 2010 (10,958 → 10,933).
Clayton city, CA Climate
Clayton city, CA has an average annual temperature of 15.5°C (60°F) and receives about 508 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
15.5°C
Avg Temp
508
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 8° / 47° | 109 mm |
| February | 11° / 51° | 90 mm |
| March | 12° / 54° | 73 mm |
| April | 14° / 58° | 30 mm |
| May | 17° / 63° | 11 mm |
| June | 20° / 68° | 3 mm |
| July | 22° / 72° | 1 mm |
| August | 22° / 72° | 2 mm |
| September | 21° / 70° | 7 mm |
| October | 18° / 64° | 30 mm |
| November | 12° / 54° | 74 mm |
| December | 9° / 47° | 78 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Clayton city, CA
The most comfortable months to visit Clayton city, CA are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near 4°C low). January is usually the wettest month.
Where to stay near Clayton
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.